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Wed, 21 Dec 2022 08:02:42 +0000 From: Clark Wang To: linux@armlinux.org.uk, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com, andrew@lunn.ch, hkallweit1@gmail.com Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] net: stmmac: resume phy separately before calling stmmac_hw_setup() Date: Wed, 21 Dec 2022 16:01:44 +0800 Message-Id: <20221221080144.2549125-3-xiaoning.wang@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221221080144.2549125-1-xiaoning.wang@nxp.com> References: <20221221080144.2549125-1-xiaoning.wang@nxp.com> X-ClientProxiedBy: SI2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:196::10) To HE1PR0402MB2939.eurprd04.prod.outlook.com (2603:10a6:3:db::18) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: HE1PR0402MB2939:EE_|PAXPR04MB8426:EE_ X-MS-Office365-Filtering-Correlation-Id: 6a95fdf1-618e-4dc2-0750-08dae329bc7a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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We found the stmmac_hw_setup() when system resumes will called after the stmmac_mac_link_up(). So the correct values set in stmmac_mac_link_up() are overwritten by stmmac_core_init() in phylink_resume(). So call the new added function in phylink to resume phy fristly. Then can call the stmmac_hw_setup() before calling phy_resume(). Signed-off-by: Clark Wang Reviewed-by: Piotr Raczynski --- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index c6951c976f5d..d0bdc9b6dbe8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -7532,16 +7532,9 @@ int stmmac_resume(struct device *dev) } rtnl_lock(); - if (device_may_wakeup(priv->device) && priv->plat->pmt) { - phylink_resume(priv->phylink); - } else { - phylink_resume(priv->phylink); - if (device_may_wakeup(priv->device)) - phylink_speed_up(priv->phylink); - } - rtnl_unlock(); - rtnl_lock(); + phylink_phy_resume(priv->phylink); + mutex_lock(&priv->lock); stmmac_reset_queues_param(priv); @@ -7559,6 +7552,11 @@ int stmmac_resume(struct device *dev) stmmac_enable_all_dma_irq(priv); mutex_unlock(&priv->lock); + + phylink_resume(priv->phylink); + if (device_may_wakeup(priv->device) && !priv->plat->pmt) + phylink_speed_up(priv->phylink); + rtnl_unlock(); netif_device_attach(ndev);